ESP32 has esp_arduino_version.h now, port this to ESP8266

Since ESP32 v 2.0.0, `Arduino.h` includes the afore-mentioned file. Is there support in the release process yet to update `ESP_ARDUINO_VERSION_MAJOR`, `ESP_ARDUINO_VERSION_MINOR`, and `ESP_ARDUINO_VERSION_PATCH` reliably?

```
// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#ifdef __cplusplus
extern "C" {
#endif

/** Major version number (X.x.x) */
#define ESP_ARDUINO_VERSION_MAJOR 2
/** Minor version number (x.X.x) */
#define ESP_ARDUINO_VERSION_MINOR 0
/** Patch version number (x.x.X) */
#define ESP_ARDUINO_VERSION_PATCH 0

/**
* Macro to convert ARDUINO version number into an integer
*
* To be used in comparisons, such as ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(2, 0, 0)
*/
#define ESP_ARDUINO_VERSION_VAL(major, minor, patch) ((major << 16) | (minor << 8) | (patch))

/**
* Current ARDUINO version, as an integer
*
* To be used in comparisons, such as ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(2, 0, 0)
*/
#define ESP_ARDUINO_VERSION ESP_ARDUINO_VERSION_VAL(ESP_ARDUINO_VERSION_MAJOR, \
ESP_ARDUINO_VERSION_MINOR, \
ESP_ARDUINO_VERSION_PATCH)

#ifdef __cplusplus
}
#endif
```